Galingging, Kamaluddin, Ronald Heriko Saragih, Emmi Simangunsong, and Elia Prischilia Tambunan. “Singing Training Through Choir for Students at Bahorok 1 Public High School”. Samakta: Jurnal Pengabdian Kepada Masyarakat 3, no. 1 (February 25, 2026): 68–76. Accessed February 25, 2026. https://ejournal.edukhatulistiwa.com/index.php/samakta/article/view/314.